decker



(Model.)

DECKER 0R CHECK.

Patented Deo. 9, 1884.

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NiTnn STATES ERNST F. DECKER, OE ALBANY, NEV YORK.

DOOR-CHECK.

SPECIFICATION forming part of Letters Patent No. 308,880, lated December 9, 1884.-.

i' Application filed October 25, 1583. (Model.)

To @ZZ w/wm t may concern.:

Be it known that I, ERNST F. DECKER, of the city and county of Albany, in the State of New York, have invented certain new and useful Improvements in Door-Fasteners, of which the following is a specification.

My invention relates to improvements in automatic devices for retaining doors in an open position; and the object ot' my improvenient is to provide, for the purpose-above named, a simple and effective device, which, being provided with a guard attachment, may be linstantly thrown out of use. I attain this object by means of the mechanism illustrated in the accompanying drawings, which forni part of this specification, and in which- Figure 1 is a side elevation of my device as applied to a door; Fig. 2, an enlarged side elevation of the catch and staple detached, Fig. 3, aplan view of the same, and Fig. 4 a side elevation of the catch with the guard attachment in position for preventing` the staple from engaging with the catch.

As represented in the drawings, A is the catch-lever, pvoted at a to a bracket, B, which is designed to be secured upon the door behind the door D, where it will retain the lat-A ter in an opened position. Said catch-lever is provided on its outer end with a pendent hook, a', whose outer face is `inclined inwardly, as shown in Fig. 2. Above said hook a guard, az, is pivoted to the catch-lever, so as to lie upon the upper side thereof, as shown in Fig. 2, or, when occasion requires, to be thrown down in front of the hook o, as shown in Eig. 4. The opposite end of the catch-leverAis provided with a tread-plate, a, which may extend rearward, as shown in the drawings, or, when required to econorrglze space, it may be bent upward, either veiseally or at A spring, c4, attached to the catchlever A, is arranged to bear upon the bracket B behind the pivot a, so as to press the point of the hook a in contact with the seat of the bracket. y

The bracket B has a seat, b, whose outer end nclines inwardly, as shown in Eig. 2, and it is also provided with ears b, to which the catch-lever A is pivoted.

The staple C is intended to be secured to the back of the door D, and is provided with a cross-bar, c, which engages behind the hook a ofthe catch-lever, as indicated by the dotted lines in Fig. l, and secures the door in an opened position.

The operation of my device is as follows:

The bracket B is secured tothe iioor and the staple C to the door, in the relative positions shown in Eig. l; then, while the guard a2 is raised, as shown in Fig. 2, when the door is thrown wide open the cross-bar c of the staple will strike against the inclined face of the hook a and cause that end of the catchlever A to rise and admit the cross-bar c into the spa-ce behind the hook c. As soon as this is accomplished the spring c* restores the catch-lever A to its normal position, so as to lock the cross-bar c behind the hook a' and effect the retention of the door D in its opened position. The releasernent of the door is effected by simply pressing upon the tread-plate c3, whereby the hook a is raised,

Vto permit the cross-bar c to pass out from beneath the catch-lever A. Vhen the guard a is thrown down, as shownin Fig. 4, the cross- 'bar c is prevented from passing under the catch-lever A, and the door is lel't free to close at will.

When preferred, the spring a* may be dispensed with by placing a preponderance of weight at the hook end of the catch-lever; and when the fastener is applied to use on doors which are seldom to be closed the guard a-1 inay be dispensed with.

I claim as my invention- In a door-fastener, the combination, with a catch-lever, A, pivoted to a bracket, B, and having a hook, a', formed thereon, and a guard, ai, pivoted thereto, as herein set forth, of a staple, C, adapted to engage with the hook d', in the manner and for the purpose herein specified.

ERNST E. DECKER.

- Vitnesses:

WILLIAM H. Low, S. B. BREWER. 

